Do you all even know what this stuff is that im sharing. Really look at it and stop thinking about microchip jokes. Quantum dots are zero-dimensional and can fit inside a virus. That damn small. I did a paper on them like 15 years ago.
When the quantum dots are illuminated by UV light, an electron in the quantum dot can be excited to a state of higher energy. In the case of a semiconducting quantum dot, this process corresponds to the transition of an electron from the valence band to the conductance band. The excited electron can drop back into the valence band releasing its energy by the emission of light. This light emission (photoluminescence) is illustrated in the figure on the right. The color of that light depends on the energy difference between the conductance band and the valence band.
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